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400gm lots of beginner grade Nobby opal from Lightning Ridge, Australia.
These have been scooped randomly from a larger deal
This is low grade and would be great for beginners.
A few pieces have a little colour.

Wetted to bring out colours
Rule in Millimeters
Measurements are generally rounded down and approximate

Colour: Please note the camera has been white-balanced to give truer colours NO Photo Shopped enhancement.